3: Hayes? (Tempted to pick on GW Bush, and can't believe I'm stumped by a presidential 3-pointer--I've never heard either of these nicknames--but the valuations in this whole cat seem skewed.)6: C (ditto--Polk?)9: McKinley12: Van Buren15: Grant

2. Justin Bieber4. Eminem6. Lady Gaga8. World Cup -- only thing that makes sense to me10. Charlie -- total accident; happened upon it just days ago

3. Hayes6. 9. three Williams of Ohio, none a member of the International Workers of the World; gonna go with Taft based on the 'wobbliness of corpulence, even though 'idol' doesn't quite fit by that standard.12. Van Buren15. Grant